Display system for manually guided visual examination

Abstract

An example system is described herein for a display device to couple with a handheld diagnostic tool allowing an optical device to be converted to digitally imaging and back and used for performing a medical examination by a clinician. The display device includes an interface that includes the ability to attach to an eyepiece of the diagnostic device. The display device includes a camera within the channel to align with the eyepiece and capture image data through the diagnostic device when the display device is coupled with the diagnostic device. The display device has the camera essentially centered along a length and width of the body such that the display device maintains the balance of the diagnostic device. The display device further includes sensors to determine an orientation of the display device to annotate image data with an indication of a reference frame.

What is claimed is: 
     
         1 . A system, comprising:
 a handheld diagnostic tool comprising:
 a housing defining optics and illumination for performing a manually guided vision exam of a patient; and 
 an attachment mechanism optically connected to the optical port; and 
   a device comprising:
 a body defining a receiving surface on a first side of the housing; 
 a camera positioned within the channel; and 
 a display on a second side of the body, wherein the receiving surface is configured to releasably secure with the attachment mechanism to align the camera with the optical port. 
   
     
     
         2 . The system of  claim 1 , wherein the attachment mechanism and receiving surface are configured to enable rotation of the device relative to the handheld diagnostic tool while maintaining alignment of the camera with the optical port. 
     
     
         3 . The system of  claim 1 , wherein the device further comprises an orientation sensor configured to determine an orientation of the device. 
     
     
         4 . The system of  claim 3 , wherein the orientation of the device comprises an orientation with respect to a gravitational reference. 
     
     
         5 . The system of  claim 3 , wherein the orientation sensor comprises one or more sensors within the channel configured to detect an orientation of the eyepiece relative to the device. 
     
     
         6 . The system of  claim 3 , wherein the display of the device is configured to display image data from the camera including an indication of the orientation of the device based at least in part on the orientation sensor. 
     
     
         7 . The system of  claim 1 , wherein the receiving surface comprises a first portion adjacent a first edge of the device to receive the attachment mechanism and a locking portion at a center portion of the device connected with the first portion and configured to receive and rotationally secure the device with the handheld diagnostic tool. 
     
     
         8 . The system of  claim 1 , wherein:
 the handheld diagnostic tool comprises one or more detents adjacent the eyepiece; and   the device comprises one or more surfaces positioned radially around the camera to receive at least one of the one or more detents of the handheld diagnostic tool and frictionally resist movement of the device relative to the handheld diagnostic tool.   
     
     
         9 . The system of  claim 1 , wherein the device further comprises a lock to selectively prevent removal of the device from the attachment mechanism. 
     
     
         10 . The system of  claim 1 , wherein the device is configured to detect an interface between the receiving surface and the attachment mechanism and, in response to detecting the interface, cause the display and camera to activate. 
     
     
         11 . A display device for a handheld diagnostic tool, the display device comprising:
 a body;   an interface adjacent a surface of the body comprising:
 a receiving portion adjacent the edge of the display device, the receiving portion defining an opening having a first width to receive an eyepiece of the handheld diagnostic tool; 
 a middle portion positioned between the edge of the display device and the center portion along the first direction, the middle portion having a second width at the surface of the body and a third width at a depth below the surface of the body, wherein the second width is less than the third width; and 
 a locking portion positioned adjacent the center portion of the display device comprising one or more features to interface with the eyepiece to frictionally retain the eyepiece in a position; 
   a camera positioned within the channel adjacent the center portion; and   a display communicably coupled to the camera and configured to display image data captured by the camera.   
     
     
         12 . The display device of  claim 11 , further comprising an orientation sensor configured to determine an orientation of the display device relative to a gravitational reference frame, and wherein the display is configured to display orientation data associated with the orientation of the display. 
     
     
         13 . The display device of  claim 11 , wherein the locking portion comprises an orientation sensor configured to detect an orientation of the handheld diagnostic tool relative to the display device. 
     
     
         14 . The display device of  claim 11 , wherein the locking portion comprises a frictional interface configured to releasably rotationally secure the display device with the eyepiece. 
     
     
         15 . The display device of  claim 14 , wherein the frictional interface comprises one or more detents positioned around the camera. 
     
     
         16 . The display device of  claim 15 , wherein the one or more detents comprise four detents spaced evenly about the camera. 
     
     
         17 . The display device of  claim 11 , wherein the locking portion comprises a rectangular profile configured to receive a portion of the eyepiece in four orientations and resists rotation of the display device when the eyepiece is coupled with the locking portion. 
     
     
         18 . The display device of  claim 11 , wherein the locking portion comprises a round profile configured to enable the display device to rotate with respect to the eyepiece while the eyepiece is coupled with the locking portion. 
     
     
         19 . The display device of  claim 11 , further comprising one or more processors and one or more computer-readable media having instructions stored thereon that, when executed by the one or more processors, perform operations comprising:
 receiving image data from the camera;   determining an orientation of the image data with respect to a reference frame of the patient by processing the image data using one or more algorithms; and   causing an indication of the orientation to visible on the image data or display of the display device.   
     
     
         20 . A device, comprising:
 a body defining a channel on a first side;   a camera positioned within the channel; and   a display on a second side of the body, wherein the channel is configured to releasably secure with an eyepiece of a handheld diagnostic tool to align the camera with an optical port of the handheld diagnostic tool and enable rotation of the device relative to the handheld diagnostic tool while maintaining alignment of the camera with the optical port.   
     
     
         21 . The device of  claim 20 , further comprising an orientation sensor configured to determine an orientation of the device relative to a gravitational reference frame, and wherein the display is configured to display orientation data associated with the orientation of the device. 
     
     
         22 . The device of  claim 20 , wherein the channel comprises a first end adjacent an edge of the device and a second end adjacent a center portion of the device, wherein the second end comprises a frictional interface to releasably rotationally secure the device with the eyepiece. 
     
     
         23 . The device of  claim 22 , wherein the frictional interface comprises one or more detents positioned around the camera. 
     
     
         24 . The device of  claim 22 , wherein the channel further comprises an orientation sensor positioned adjacent the second end and configured to detect an orientation of the handheld diagnostic tool relative to the device.